Klein Tools 630-3/8 Hollow Shaft Nut Driver 3/8 Inch

Product Description

The KLEIN TOOLS 630-3/8 is a hollow shaft nut driver designed for use on long bolts, studs, and fasteners that extend beyond the nut face. The hollow shaft allows the driver to slide over threaded rod or stud ends without bottoming out, giving trades a reliable solution where solid-shaft drivers fail. The hex drive size is 3/8 inch, the shank measures 3 inches, and the overall tool length is 6.75 inches. The cushion grip handle provides control and reduces hand fatigue during repetitive fastening tasks. This tool is sold individually and weighs 0.2 pounds.

The 630-3/8 is suited for electrical, HVAC, and general mechanical work where 3/8 inch hex fasteners are common. The hollow shaft design is especially useful when mounting electrical panels, equipment brackets, or conduit supports where long machine screws or all-thread rod is involved. It fits standard residential and light commercial applications where hand-driven nut setting is preferred over impact tools.

Key Features

• Hollow shaft passes over long bolts and threaded studs without interference
• 3/8 inch hex drive size fits standard hex-head fasteners
• 3 inch shank length provides reach in recessed or tight spaces
• 6.75 inch overall length balances reach and control
• Cushion grip handle reduces hand fatigue during extended use

Compatibility

Designed as an OEM-style hand tool for use with 3/8 inch hex-head fasteners in electrical, HVAC, and mechanical installation applications.

Installation Notes

This nut driver is a hand tool intended for use by electricians, HVAC technicians, and plumbers working with hex fasteners. No power source is required. Always ensure the correct hex size is matched to the fastener before applying torque to avoid rounding. Inspect the handle and shank for damage before use.

Technical Specifications

• Hex Drive Size: 3/8 inch
• Shank Length: 3 inches
• Overall Length: 6.75 inches
• Shaft Type: Hollow
• Weight: 0.2 pounds

Standard Information

• Brand: KLEIN TOOLS
• Manufacturer Part Number: 630-3/8